a special interrogation team used on high value targets is ready to question 19-year-old dzhokhar tsarnaev when he is able to communicate. >> law enforcement professionals are hoping for a host of reasons that the suspect survives because we have a million questions. and those questions need to be answered. >> reporter: police captured tsarnaev after nearly a day- long search. officers did not read him his miranda rights. they invoked a rarely used public safety exception. the case started thursday night when his older brother tamerlan died after a firefight with police. then officers spent friday going door to door in watertown looking for johar. pictures from a night vision camera show he was hiding in a boat stored in a backyard. after a second shootout, tsarnaev gave himself up and medics rushed him to the hospital. doctors here at boston's beth israel are treating the suspect for serious injuries. cbs news has learned he is suffering from leg and neck wounds and could have bled to death if he hadn't been found in time. authorities are still in watertown collecting evidence. residents